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Register/
Recorded information
STEP
8
Duration of the latest starting situation of stage I
operating time t
from zero and moves the old value up in the memory stack. At a maximum five
values are memorized - if a sixth starting occurs the oldest value will be lost. When
the concerned stage has tripped, the counter reading is 100. // Number of startings
of the low-set neutral overcurrent stage I
9
Duration of the latest starting situation of stage I
operating time t
from zero and moves the old value up in the memory stack. At a maximum five
values are memorized - if a sixth starting occurs, the oldest value will be lost. When
the concerned stage has tripped, the counter reading is 100. // Number of startings
of the high-set neutral overcurrent stage I
0
Display of blocking signals and other external control signals.
The right-most digit indicates the state of the blocking input of the unit. The
following states may be indicated:
0 = no blocking signal
1 = the blocking or control signal BS is active.
The effect of the signal on the unit is determined by the setting of switchgroup
SGB
From this register "0" it is possible to move on to the TEST mode, where the
starting and tripping signals of the module are activated one by one. For further
details see the description "General characteristics of D-type SPC relay units".
A
The address code of the measuring relay module, required by the serial communi-
cation system. The address code is set at zero unless the serial communication
system is used.
The submenus of this register comprise the selection of the data transfer rate of the
serial communication, a bus traffic monitor indicating the operating state of the
serial communication system, a password required for the remote control of the
settings and a status information for the main/second setting bank, and finally the
setting of time delay for the circuit breaker failure protection.
If the module is connected to a system including a control data communicator and
if the communication system is operating, the counter reading of the bus traffic
monitor will be zero. Otherwise the numbers 0...255 are continuously rolling in
the counter. The password given in the setting mode of the next submenu step
must always be entered via the serial communication before settings can be re-
motely altered. With the setting selector status in the fourth submenu either the
main setting bank or the second setting bank can be made active.
-
Display dark. By pressing the STEP push-button the beginning of the display
sequence is re-entered.
The registers 1...9 are set to zero by pressing the
push-buttons RESET and PROGRAM simul-
taneously. The registers are also cleared if the
auxiliary power supply of the module is inter-
rupted. The address code of the plug-in mod-
ule, the data transfer rate of the serial commu-
>. A new starting resets the counter, which then starts counting
0
>>. A new starting resets the counter, which then starts counting
0
nication, the password and the status of the
main/second setting bank switch are not erased
by a voltage failure. The instructions for setting
the address and the data transfer rate are de-
scribed in the "General characteristics of D-type
SPC relay units".
> as a percentage of the set
0
>, n (I
>) = 0...255.
0
0
>> as a percentage of the set
0
>>, n (I
>>) = 0...255.
0
0
15
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